Measurement of various quantities has been an integral part of our lives since ancient times. In this modern era of automation, we need to measure quantities more so than ever. So, what is the importance of Number Density converter? The purpose of Number Density converter is to provide Number Density in the unit that you require irrespective of the unit in which Number Density was previously defined. Conversion of these quantities is equally important as measuring them. Number Density conversion helps in converting different units of Number Density. Number Density is an intensive quantity used to describe the degree of concentration of countable objects (particles, molecules, phonons, cells, galaxies, etc.) in physical space.. There are various units which help us define Number Density and we can convert the units according to our requirement. unitsconverters.com provides a simple tool that gives you conversion of Number Density from one unit to another.